This weather has a price Keeping the median Lewis County home comfortable runs roughly $365 a year in heating and cooling alone. See where it lands in the monthly bill

30-year climate normals

Lewis County Climate and Weather Averages

Hottest month: August

87.0°

average daily high. The coldest month is January, averaging a low of 28.0°F.

Lewis County gets 57.1" of precipitation a year, and 29% of it falls in Mar, Apr, May.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

Month	Avg high	Avg low	Precip
January	47.6°	28.0°	4.44"
February	51.7°	30.8°	4.60"
March	60.3°	38.6°	5.39"
April	70.6°	47.0°	5.64"
May	77.0°	56.1°	5.54"
June	83.6°	64.2°	4.79"
July	86.8°	67.6°	4.85"
August	87.0°	66.4°	4.11"
September	81.4°	59.1°	3.81"
October	71.7°	48.1°	4.24"
November	59.2°	38.1°	4.03"
December	50.2°	31.6°	5.66"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 29% falling in the wettest three months (Mar, Apr, May).

January 4.44"

February 4.60"

March 5.39"

April 5.64"

May 5.54"

June 4.79"

July 4.85"

August 4.11"

September 3.81"

October 4.24"

November 4.03"

December 5.66"

Annual total 57.1"

What this climate costs you

Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.

Cooling degree days How much air conditioning the climate demands 1,404

Heating degree days How much heating the climate demands 3,762

Approximate annual cooling cost At 13.42¢/kWh, Tennessee average $188

Approximate annual electric heating cost Lower where heating is gas rather than electric $177

These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Lewis County, where electricity is one line of eight.

Common questions

What is the weather like in Lewis County?

Lewis County averages a high of 87.0°F in August and a low of 28.0°F in January. Annual precipitation is 57.1 inches, with essentially no snow.

When is the rainy season in Lewis County?

The wettest stretch is Mar, Apr, May, which accounts for 29% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Lewis County?

The average daily high in August, the hottest month, is 87.0°F. That drives 1,404 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Lewis County?

The weather station used for Lewis County, HOHENWALD, TN US, reports temperature and precipitation but not snowfall, so there is no snow normal to quote here. Precipitation that falls as snow is still counted in the 57.1 inches above, measured as melted water.

Sources

Temperature, precipitation and snowfall normals: NOAA National Centers for Environmental Information, 1991 to 2020 Monthly Climate Normals, station HOHENWALD, TN US (USC00404223), 3.4 miles from the county centroid.
Heating and cooling degree days: NOAA, same station and period.
Annual figures on this page are the sum of that station's twelve monthly normals. NOAA also publishes a separately-computed annual normal, which can differ from the monthly sum by a few percent; we use the monthly series because the month-by-month breakdown above has to come from it.
Electricity price: US Energy Information Administration, Electric Power Monthly Table 5.6.A, Tennessee residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.